For international lawyers seeking to promote compliance with international humanitarian law (IHL), some level of affective awareness is essential – but just where one might cultivate an understanding of emotions, and at which juncture of one's career, remains a mystery. This article proposes that what the IHL lawyers and advocates of the future need is an affect-based education. More than a simple mastery of a technical set of emotional intelligence skills, what we are interested in here is the refinement of a disposition or sensibility – a way of engaging with the world, with IHL, and with humanitarianism. In this article, we consider the potential for the Jean-Pictet Competition to provide this education. Drawing on our observations of the competition and a survey with 231 former participants, the discussion examines the legal and affective dimensions of the competition, identifies the precise moments of the competition in which emotional processes take place, and probes the role of emotions in role-plays and simulations. Presenting the Jean-Pictet Competition as a form of interaction ritual, we propose that high “emotional energy” promotes a humanitarian sensibility; indeed, participant interactions have the potential to re-constitute the very concept of humanitarianism. We ultimately argue that a more conscious engagement with emotions at competitions like Pictet has the potential to strengthen IHL training, to further IHL compliance and the development of IHL rules, and to enhance legal education more generally.